Jay and I continued to follow this storm south during the mid to late
evening hours southeast of Rolla, KS into the Oklahoma panhandle north
of Guymon. The sequence of images shown here span about 20 minutes or
so from about 8:15 to 8:40pm showing the striated structure of the
high-based updraft as we were near the Oklahoma-Kansas border. New
storms were forming farther to the west which would eventually put on
an amazing cloud-to-ground lightning show in the saturated twilight
(see Part 3 below).